ImportError: No module named _list

[Nic2012]

Hi, great stuff here and I would like to try it on a new RaspberryPI 3 distro pi64 https://github.com/bamarni/pi64.

Installed libgphoto 2.5.15 based on http://blog.marcelkrauskopfphotography.de/category/raspberry-pi/
Installed python-gphoto by sudo pip install -v gphoto2 without problems.

...
  Removing source in /tmp/pip-build-OjKwUf/gphoto2
Successfully built gphoto2
Installing collected packages: gphoto2

Successfully installed gphoto2-1.7.1
Cleaning up...

lsusb gives me

Bus 001 Device 006: ID 04b0:0422 Nikon Corp. D700 (ptp)
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter
Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp. SMC9514 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

But running the example return exceptions:

root@pi64:/home/pi# python /usr/local/share/python-gphoto2/examples/camera-summary.py
Traceback (most recent call last):
  File "/usr/local/share/python-gphoto2/examples/camera-summary.py", line 25, in <module>
    import gphoto2 as gp
  File "/usr/local/lib/python2.7/dist-packages/gphoto2/__init__.py", line 3, in <module>
    from gphoto2.abilities_list import *
  File "/usr/local/lib/python2.7/dist-packages/gphoto2/abilities_list.py", line 6, in <module>
    import gphoto2.context
  File "/usr/local/lib/python2.7/dist-packages/gphoto2/context.py", line 6, in <module>
    import gphoto2.list
  File "/usr/local/lib/python2.7/dist-packages/gphoto2/list.py", line 17, in <module>
    _list = swig_import_helper()
  File "/usr/local/lib/python2.7/dist-packages/gphoto2/list.py", line 16, in swig_import_helper
    return importlib.import_module('_list')
  File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module
    __import__(name)
ImportError: No module named _list

Using Python 2.7.13 and libgphoto2-2.5.15.

Any ideas would be appreciated. Best regards,
Nic

[jim-easterbrook]

The _list module is the compiled C code and should be in the same directory as the Python module list.py. What's in the directory /usr/local/lib/python2.7/dist-packages/gphoto2/?

[Nic2012]

Later I have installed some other python stuff and libudev etc. and afterwards it runs fine, not sure what was really missing, the content is currently:

pi@pi64:~$ ls /usr/local/lib/python2.7/dist-packages/gphoto2
abilities_list.py   camera.pyc   _context.so  filesys.py   __init__.pyc  port_info_list.py   port_log.pyc  _result.so   widget.py
abilities_list.pyc  _camera.so   file.py      filesys.pyc  list.py       port_info_list.pyc  _port_log.so  version.py   widget.pyc
_abilities_list.so  context.py   file.pyc     _filesys.so  list.pyc      _port_info_list.so  result.py     version.pyc  _widget.so
camera.py           context.pyc  _file.so     __init__.py  _list.so      port_log.py         result.pyc    _version.so

I guess thats looks ok. Strange thing is on this distro I have to call the commands by sudo, no matter if its python-gphoto2 or the regular gphoto2 cli.

pi@pi64:~$ python /usr/local/share/python-gphoto2/examples/camera-summary.py
WARNING: gphoto2: (gp_libusb1_open [libusb1.c:392]) 'libusb_open (port->pl->d, &port->pl->dh)' failed: Access denied (insufficient permissions) (-3)
Traceback (most recent call last):
  File "/usr/local/share/python-gphoto2/examples/camera-summary.py", line 60, in <module>
    sys.exit(main())
  File "/usr/local/share/python-gphoto2/examples/camera-summary.py", line 33, in main
    gp.check_result(gp.gp_camera_init(camera, context))
  File "/usr/local/lib/python2.7/dist-packages/gphoto2/result.py", line 162, in check_result
    raise GPhoto2Error(error)
gphoto2.GPhoto2Error: [-7] I/O problem

[jim-easterbrook]

The sudo requirement is possibly because of permissions on the USB port. You might need to add your regular user to a USB group, or add a udev rule to change the permissions.

[Nic2012]

Yeah, that makes sense, thank y for y support.

[jim-easterbrook]

For future reference: I've just discovered (while experimenting with MSYS2 on Windows) that installing libtool can cure some module loading problems.